Small Engine Troubleshooting Problems? Ask a Mechanic Now.
Is engine turning, just not starting, or will not turn full circle? Single cylinder engine I assume.
Have you checked the spark and the fuel solenoid in the carburetor? I see fuel solenoids that will not open as soon as the key is turned on. The solenoids tip closes the main jet of the carburetor, and will cause no start or delayed start. Best test of the solenoid, is to remove it and replace with a old Briggs bowl bolt. If nt a fuel or spark issue, the valves may need to be adjusted. Briggs valves should be adjusted every 100 hours. .004 to 006 inch.
Compression is fine. If valve adjustment does not help, do you have good spark? If so, take the old fuel solenoid, you removed, and cut off the working tip, and install it as a dummy for test.
Did you find problem? I see question is still open.